sys/div.h: change ingroup directive
sys/div.h: change ingroup directive

OlegHahm/RIOT,rfuentess/RIOT,x3ro/RIOT,kbumsik/RIOT,yogo1212/RIOT,authmillenon/RIOT,basilfx/RIOT,authmillenon/RIOT,kaspar030/RIOT,authmillenon/RIOT,aeneby/RIOT,BytesGalore/RIOT,BytesGalore/RIOT,OTAkeys/RIOT,mfrey/RIOT,BytesGalore/RIOT,cladmi/RIOT,rfuentess/RIOT,OlegHahm/RIOT,x3ro/RIOT,avmelnikoff/RIOT,miri64/RIOT,A-Paul/RIOT,x3ro/RIOT,mtausig/RIOT,BytesGalore/RIOT,A-Paul/RIOT,smlng/RIOT,kbumsik/RIOT,avmelnikoff/RIOT,yogo1212/RIOT,ant9000/RIOT,mtausig/RIOT,cladmi/RIOT,gebart/RIOT,lazytech-org/RIOT,mfrey/RIOT,OTAkeys/RIOT,smlng/RIOT,yogo1212/RIOT,aeneby/RIOT,toonst/RIOT,avmelnikoff/RIOT,toonst/RIOT,cladmi/RIOT,josephnoir/RIOT,kYc0o/RIOT,avmelnikoff/RIOT,biboc/RIOT,basilfx/RIOT,basilfx/RIOT,RIOT-OS/RIOT,ant9000/RIOT,authmillenon/RIOT,josephnoir/RIOT,miri64/RIOT,aeneby/RIOT,jasonatran/RIOT,toonst/RIOT,aeneby/RIOT,kYc0o/RIOT,biboc/RIOT,rfuentess/RIOT,biboc/RIOT,biboc/RIOT,authmillenon/RIOT,OlegHahm/RIOT,cladmi/RIOT,gebart/RIOT,mtausig/RIOT,rfuentess/RIOT,gebart/RIOT,OTAkeys/RIOT,biboc/RIOT,basilfx/RIOT,cladmi/RIOT,x3ro/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,lazytech-org/RIOT,rfuentess/RIOT,toonst/RIOT,yogo1212/RIOT,kaspar030/RIOT,kYc0o/RIOT,OTAkeys/RIOT,mfrey/RIOT,kaspar030/RIOT,kbumsik/RIOT,mtausig/RIOT,jasonatran/RIOT,OTAkeys/RIOT,yogo1212/RIOT,jasonatran/RIOT,x3ro/RIOT,ant9000/RIOT,gebart/RIOT,mfrey/RIOT,avmelnikoff/RIOT,lazytech-org/RIOT,A-Paul/RIOT,BytesGalore/RIOT,ant9000/RIOT,A-Paul/RIOT,RIOT-OS/RIOT,smlng/RIOT,RIOT-OS/RIOT,smlng/RIOT,josephnoir/RIOT,smlng/RIOT,authmillenon/RIOT,kbumsik/RIOT,aeneby/RIOT,toonst/RIOT,lazytech-org/RIOT,josephnoir/RIOT,yogo1212/RIOT,kaspar030/RIOT,OlegHahm/RIOT,miri64/RIOT,basilfx/RIOT,lazytech-org/RIOT,kbumsik/RIOT,ant9000/RIOT,kYc0o/RIOT,kYc0o/RIOT,mfrey/RIOT,jasonatran/RIOT,mtausig/RIOT,A-Paul/RIOT,kaspar030/RIOT,miri64/RIOT,miri64/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,josephnoir/RIOT,gebart/RIOT